//getchar函数测试
#include<stdio.h>
#define SPACE ' '

int main(void)
{
    char ch ;
    ch = getchar();

    while (ch != '\n')
    {
        if (ch == SPACE)    putchar(ch);
        else                putchar(ch+1);

        ch = getchar();
    }
    putchar(ch);
    return 0;
}
